🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 195 (from laksa015)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa195.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://perfectionkills.com/named-function-expressions-demystified\')), getAhrefsUnparsedNoserviceFromURL(\'https://perfectionkills.com/named-function-expressions-demystified\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/perfectionkills.com\/named-function-expressions-demystified","crawl_time":1775068947,"first_indexed_time":1481854488,"http_code":200,"src_unparsed":"com,perfectionkills!\/named-function-expressions-demystified s443","src_root_hash":"9734315565312273595","history_drop_reason":null,"meta_title":"Named function expressions demystified — Perfection Kills","meta_descriptions":["Javascript rants and findings, by kangax"],"attrs_boilerpipe_text":"← back \n            90  words \n            15 June 2009\n           Named function expressions demystified After a couple of months, I have finally finished  an article on named function expressions . It’s meant to demystify some of the common misconceptions I’ve seen on the web, take an in-depth look at cross-browser quirks and explain how to safely “work around” them. Quite obviously, it also explains what named function expressions are good for and how to “take advantage” of them in your applications. If you have suggestions or find any mistakes, please let me know. Hope you like it. http:\/\/kangax.github.io\/nfe \n            Did you like this? Donations are welcome\n\n            \n\n            \n           comments powered by ","attrs_markdown":"# [Perfection Kills](https:\/\/perfectionkills.com\/)\nby kangax\n\nExploring Javascript by example\n\n[← back](https:\/\/perfectionkills.com\/ \"Back to all posts\")  90 words   15 June 2009\n\n## Named function expressions demystified\nAfter a couple of months, I have finally finished [an article on named function expressions](http:\/\/kangax.github.io\/nfe). It’s meant to demystify some of the common misconceptions I’ve seen on the web, take an in-depth look at cross-browser quirks and explain how to safely “work around” them. Quite obviously, it also explains what named function expressions are good for and how to “take advantage” of them in your applications.\n\nIf you have suggestions or find any mistakes, please let me know. Hope you like it.\n\n[http:\/\/kangax.github.io\/nfe](http:\/\/kangax.github.io\/nfe\/)\n\nDid you like this? Donations are welcome\n\nPlease enable JavaScript to view the [comments powered by Disqus.](http:\/\/disqus.com\/?ref_noscript)\n\n[comments powered by Disqus](http:\/\/disqus.com\/)\n\nCopyright © 2007-2025 Juriy [\"kangax\"](http:\/\/twitter.com\/kangax) Zaytsev - Powered by [Jekyll](http:\/\/jekyllrb.com\/) and [Github Pages](http:\/\/pages.github.com\/)  Donations are appreciated","attrs_readable_markdown":null,"meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

7 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.3 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://perfectionkills.com/named-function-expressions-demystified
Last Crawled	2026-04-01 18:42:27 (7 days ago)
First Indexed	2016-12-16 02:14:48 (9 years ago)
HTTP Status Code	200
Meta Title	Named function expressions demystified — Perfection Kills
Meta Description	Javascript rants and findings, by kangax
Meta Canonical	null
Boilerpipe Text	← back 90 words 15 June 2009 Named function expressions demystified After a couple of months, I have finally finished an article on named function expressions . It’s meant to demystify some of the common misconceptions I’ve seen on the web, take an in-depth look at cross-browser quirks and explain how to safely “work around” them. Quite obviously, it also explains what named function expressions are good for and how to “take advantage” of them in your applications. If you have suggestions or find any mistakes, please let me know. Hope you like it. http://kangax.github.io/nfe Did you like this? Donations are welcome comments powered by
Markdown	# [Perfection Kills](https://perfectionkills.com/) by kangax Exploring Javascript by example [← back](https://perfectionkills.com/ "Back to all posts") 90 words 15 June 2009 ## Named function expressions demystified After a couple of months, I have finally finished [an article on named function expressions](http://kangax.github.io/nfe). It’s meant to demystify some of the common misconceptions I’ve seen on the web, take an in-depth look at cross-browser quirks and explain how to safely “work around” them. Quite obviously, it also explains what named function expressions are good for and how to “take advantage” of them in your applications. If you have suggestions or find any mistakes, please let me know. Hope you like it. [http://kangax.github.io/nfe](http://kangax.github.io/nfe/) Did you like this? Donations are welcome Please enable JavaScript to view the [comments powered by Disqus.](http://disqus.com/?ref_noscript) [comments powered by Disqus](http://disqus.com/) Copyright © 2007-2025 Juriy ["kangax"](http://twitter.com/kangax) Zaytsev - Powered by [Jekyll](http://jekyllrb.com/) and [Github Pages](http://pages.github.com/) Donations are appreciated
Readable Markdown	null
Shard	195 (laksa)
Root Hash	9734315565312273595
Unparsed URL	com,perfectionkills!/named-function-expressions-demystified s443